<?xml version="1.0" encoding="UTF-8"?>
<!-- Copyright 2007 XBRL International. All Rights Reserved. -->
<xbrl 
xmlns="http://www.xbrl.org/2003/instance" 
xmlns:concept="http://xbrl.org/formula/conformance/example" 
xmlns:link="http://www.xbrl.org/2003/linkbase" 
xmlns:xlink="http://www.w3.org/1999/xlink" 
xmlns:iso4217="http://www.xbrl.org/2003/iso4217" 
>
  
  <link:schemaRef 
    xlink:type="simple" 
    xlink:href="period-type.xsd"/>

  <context id="context-instant">
    <entity>
      <identifier scheme="http://xbrl.org/entity/identification/scheme">earth</identifier>
    </entity>
    <period>
      <instant>2007-12-31</instant>
    </period>
  </context>
  
  <context id="context-forever">
    <entity>
      <identifier scheme="http://xbrl.org/entity/identification/scheme">romulan-star-empire</identifier>
    </entity>
    <period>
      <forever/>
    </period>
  </context>
  
  <concept:c1 contextRef="context-instant">hello earthling</concept:c1>
  <concept:c2 contextRef="context-forever">hello earthling</concept:c2>
  
</xbrl>